<TITLE>CSPLib problem submission guidelines</TITLE>
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The CSPLib site is mirrored in
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<H1>CSPLib: a problem library for constraints</H1>

<TABLE>
<TR> <TD> maintained by
     <TD ALIGN=LEFT> <A HREF="http://www.dcs.st-and.ac.uk/~ipg/">
          <B>Ian P. Gent</B></A> 
          <ADDRESS><a href="mailto:ipg@dcs.st-and.ac.uk">
          ipg@dcs.st-and.ac.uk</a></ADDRESS>
     <TD> and     
     <TD ALIGN=LEFT> <A HREF="http://www.cs.york.ac.uk/~tw/">
          <B>Toby Walsh</B></A> 
          <ADDRESS><a href="mailto:tw@cs.york.ac.uk">
          tw@cs.york.ac.uk</a></ADDRESS>
<TR>
<TD>
with help from
     <TD ALIGN=LEFT> <A HREF="http://simon.cs.cornell.edu/home/selman/">
          <B>Bart Selman</B></A>
          <ADDRESS><a href="mailto:selman@cs.cornell.edu">
          selman@cs.cornell.edu</a></ADDRESS>
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<P>
<H1> Problem submission guidelines </H1>
<P>

We welcome submission of all your constraint problems. 
We hope that the library will thereby grow to become
a valued resource within the constraints community.
To submit a problem, simply email 
<a HREF="mailto:csplib@cs.strath.ac.uk">csplib@cs.strath.ac.uk.</a>


<P>
A key factor in solving many constraints problems
is the modelling of the constraints. We therefore
specify all problems in CSPLib using natural language.
We also provide hints about modelling these problems.
<P>
As we want to help people benchmark their algorithms
on problems in CSPLib with minimum effort, we
encourage users of the library to send us
any tools that might be useful to others (e.g. C parsers
for data files, AMPL specification of problems,
ILOG Solver code, ...). All such code is placed
in the library through the generosity of the authors,
and comes with all the usual disclaimers. 
<P>
To make comparsion with previous work easier, we
provide links to papers that use these benchmarks.
If you use a problem in CSPLib, please send us the URL
to your paper so we can add it to the references
section. 
<P>
Finally, to make it easy to compare your results
with others, we will provide a record of results.
Please help us keep these records up-to-date by sending
in your results promptly. 

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